13
Ambient Level Settings
Use this table to estimate the general dBspl level of the area’s ambient noise if actual measurements are not available.
Specifications
Gain (Boost): 0 dB to 22 dB (± 1 dB)
Frequency Response: 5 Hz to 80 kHz (+0 / -3 dB)
S/N (20 Hz - 20 kHz): -96 dBV
Distortion: <0.007%
Input Impedance: Aux Input: Unbalanced 10 k-ohms
Unbalanced Input: 20 k-ohms
Balanced Input: 20 k-ohms
Output Impedance: Unbalanced Output: 300 ohms
Balanced Output: 600 ohms
Gain Ramp Speed: 1 dB/s to 20 dB/s
Power: 12 V AC/0.4A
Controls: Maximum Boost, Ramp Speed,Activity Threshold,Ambient Threshold,
Aux Level, & Relative Gain
Connector: RCA types & pluggable screw terminals
Weight: 12 oz.
Dimensions: 5
1
/4" W x 3" H x 1
1
/4" D
Indicators: Bi-Color Status (Amber/Green); Power (Green)
Typical Ambient Noise Level Typical Environments
Very High Noise 85-95 dB
Speech Almost
Impossible
Contruction Site
Machine Shop
Noisy Manufacturing
Printing Shop
High Noise 75-85 dB
Speech is
Difficult
Assembly Line
Supermarket
Transportation Waiting Room
Shipping/Warehouse
Medium Noise 65-75 dB
Must Raise
Voice to be
Heard
Noisy Office
Restaurant
Department Store
Bank / Public Area
Low Noise 55-65 dB Speech is Easy
Doctor’s Office
Hotel Lobby
Hospital
Quiet Office
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